873 



5590. The coccyx. 



It consists of, at least, three anchylosed vertebrae. The neurapophyses of the first are 

 limited as usual to the part which represents the anterior zygapophyses in other vertebrae. 



5591. The sternum, with the cartilages of the true ribs attached. 



The manubrium is larger, its clavicular angles are more produced, and the clavicular arti- 

 culations more oblong, than in the Esquimaux and the Australian. It is flatter and broader 

 in proportion to its thickness at its lower part than in the Australian. The four pieces com- 

 posing the body of the sternum have completely coalesced in this, as in most adult Europeans : 

 but, in the Esquimaux, the first and second elements continue distinct, and the hannonia be- 

 tween the third and fourth is only partially obliterated. The xiphoid piece in the present 

 sternum is ossified and bifurcate at the extremity which supports the cartilaginous appen- 

 dage : the ossified part is almost concealed by the converging extremities of the sixth and 

 seventh pairs of rib-cartilages. 



5592. The first pair of thoracic ribs. 



They are longer and larger than in the Esquimaux, have smaller heads and less produced 

 tubercles, are broader, flatter, and thinner at their sternal ends, and, upon the whole, are 

 more curved, resembling in this respect the same pair in the Australian. 



5593. The second pair of ribs. 



They are longer, broader, and describe a fuller curve than in the Esquimaux. 



5594. The third pair of ribs. 



5595. The fourth to the eleventh pairs of ribs inclusive. 



5596. The last pair of ribs. 



They are of unequal length ; one of them, in this respect, equalling its homologue in the 

 Esquimaux, the other being as short as in the Australian. 



5597. The left clavicle. 



The surface below the sternal end for the attachment of the subclavius is better defined than 

 in the Esquimaux, and resembles more, in that respect, the Australian clavicle ; but, hie that 

 of the Esquimaux, it differs from the Australian in the greater expansion of the scapular end 

 of the bone. 



5T 



